Orificial instrument



June 15, 1926.

H. L. DE ZENG ORIFICIAL INSTRUMENT Filed 061. 5, 1921 0 ATToRrEs commerce are utilized, thus greatly deful Patented June 15, 1926.

UNITED STATES PATENT oFFiCE..

HENRY L. DE ZENG, OF MOOBESTOWN, NEW JERSEY, ASSIGNOR TO DE ZENG STANDARD COMPANY, OF CAMDEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

ORIFICIAL INSTRUMENT.

Application led October 3, 1921. Serial No.` 505,147.

This invention relates todiagnostic oriicial instruments such as otoscopes', proctoscopes and similar instruments and has particular lreference to means for providing superior illumination in such instruments and also'` an unobstructed view lof the object thro-ugh the instrument.l y

A principal object ofrmy invention is to provide means for securing'superior illuminationfby using a light source of increased illuminating power 'as compared with the illumination derived from similar instruments now in use.

Another principal object of my invention is to provide a construction which gives an unobstructed view of the object while at the same time'permitting the free introduction off operating or treatment instruments.

A third important object of my invention is to provide a construction in which the lamp or like source of' illumination is either partly or entirely removed from the field of view which obtains while the instrument is in use. f

A fourth object of my invention is to provide a construction in which the electrical connections' are outside of the instrument proper. Y

Other objects of my invention are to provide a larger and more powerful 'light source applied inl a novel and practical manner, to provide an instrument with-increased illumination, the useof which greatly facilitates examinations,to provide a construction for the use of a greater and more `powerful illumination, while at the same time the main Y portion of the instrument is not altered ma- 'terially from the present acceptable form,

to provide a construction whereby the ordinary and inexpensive miniature lamps of creasing the maintenance cost of the instruinent, to provi-de an instrumentwhich will `beuniversal invits application, and to provide an instrument that is alwaysin operable condition.

Further objects and advantages of my invention include simplification in construction, wherein the foregoing advantages are accomplished in a practical manner, and such objects and advantages will be apparent pnnneotion 'with the accompanying draw- `urigen both cf which refer te the invention iiszepphed to` ubriacone:

For the purpose of illustrating my invention,` l -have shown in the accompanying '.drawings a typical embodiment thereof which is at present preferred by me, since `this embodiment will be found in practice casing. in detached position.

\Figure 3 represents a rear elevation of the casing with the lens cover removed.

Figure 4irepresents a section on line 4:-11 of Figure l.

Figure 5 represents a section on line-- of Figuret. i Y

Similar numerals of reference indicate corresponding parts.

Referring to the drawings. In the use of oriiioial instruments, three considerations are of special importance, a proper and Vsufficient illumination, ease of observation, and facility of usingI operating or treatment instruments in conjunction with thediagnostic instrument. In all three of these considerations myv invention is superior to prese-nt constructions'.

1 designates the casing of an orificial instrument, embodying my invention. The

rear end of the casing is closed and has spaced openings 2 with which are adaptedV to register the lens 3 and the opening t of the lens carrier 5 which is rotatableon the casingV 1 and provided with a lrnurle'd fiange Y 6` for effecting its rotation. The casing 1 hasv detachably connected with its front end a speculum 7. The casing 1 has depending from it an internally" threaded tube 8 of enlarged diameterat its lower end to' receive the -lamp 9 carried by the battery 10, the casing of which fo-rms a grasping handle. The tube 8 is in threaded engagement with the hand-le and the latter is provided with a manually actuated switch 11. The tubev 8 has connected with it a reflector tube', 12 forming a iight chamber; and. havin i intenten it is. and; previene, i m

with a light opening 14, through which the licht passes to the object. 15 designates a threaded opening adapted to receive a nipple at the end of a pneumatic attachment, not shown, consisting of a tube and bulb.

The instrument is applied in the usual manner. The lamp employed may have either a transparent or a translucent globe so that either clear or diffused light may be employed.

All diagnostic orificial instruments thus far produced have been so constructed that the miniature lamps used therein were necessarily low in illuminating power and the usefulness of the instruments was -correspondingly limited. My invention is designed to utilize larger and more powerful lamps, thus greatly increasing the practical usefulness of the instrument and at the same time expediting the examination.

All diagnostic oriicial instruments heretofore produced have employed miniature electric lamps which were made especially for each type of instrument. Such' special lamps are, of necessity, expensive and often difficult to procure, the price ranging from eighty cents to a dollar and a half each.

My invention permits the use of stock miniature lamps identical with those used in flashlights. Such lamps are carried at all flashlight supply stores throughout the world and they are sold at prices ranging from ten to twenty-five cents each.

The utilization of stock lamps not only makes the instrument much cheaper to maintain but also makes it far more universal in its application than instruments of present construction, it being obvious that practical usefulness of an electrically lighted instrument is greatly limited if lamps of special manufacture only can be used. My improved instruments need never be out of service through lack of lamps as is frequently the case with present instruments, due either to neglect in ordering, or to loss, or damage in transit, or to other causes beyond control, for all fiashlight supply stores throughout the world carry lamps suitable for use in my improved instruments.

In the construction of present instruments, the miniature electric lamp is located inside the body portion of the instrument. This is necessitated by the low illuminating power` of the special miniature lamps, which requires that they be located near to the area to be illuminated, otherwise the loss in illu mination would render` the instruments of little or no value. The present construction, with the miniature electric lamp located inside the main body portion, does not permit the use of larger and more powerful lamps because any increase in size of the lamp would seriously obstruct the view of the object and also hamper the utilization of operating or other equipment. As a matter of fact, the view secured with present instruments is already obstructed somewhat by the presence of the electric lamp and furthermore, the introduction and utilization of operating` equipment is correspondingly interfered with.

In my invention, I utilize a novel construction in which the lamp is located entirely out of the line of observation, preferably outside the main body portion of the instrument and in any case, the lamp is carried by means exterior to the main body portion. This novel construction as shown in the drawings and described herein entirely avoids any obstruction tothe view, or to the employment of instruments, while at the same time larger and more powerful lamps may be utilized.

In the preferred form of my invention, I

use a larger lamp placed outside the periphery of the body portion of the instrument. lVith the lamp located in such position, it may be of any required size and design without obstructing the view of the obj ect, or hampering the use of operating equipment, while at the same time, a sufficient illumination is maintained. In the preferred form of my invention, the lamp is carried in upright position. All electrical contacts in my invention are exterior to the main body p0rtion of the instrument and are, therefore, easy of access and greatly simplified.

In order to secure a better view of the object, a magnifying lens is frequently used in position at the sight hole and with my invention this magnification is still more advantageous because of an unobstructed field of view due to the removal of the lamp therefrom.

It will now be apparent that I have devised a novel and useful construction of an orici al instrument which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described an embodiment thereof which is at present preferred by me and which will give in practice satisfactory and reliable results, it is to be understood that said embodiment is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its ad1 vantages. A y

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

l. In a device of the character described, a handle, a support extending from the handle, a lamp supported by the support, a reflector tube having an annular portion fitting on the support, a tapered portion there beyond, a light tube beyond the tapered portion having an opening, and a reflector in the light tube, said opening in the light tube being in line with the reflector and adapted to emit the light from the reflector;

2. In a' device of the character described,

a handle, a support extending from the handie, a lamp supported by the support, a reiector tube having an annular portion fitting on the support, a tapered portion therebeyond, a light tube beyond the tapered portion, having an opening, a reflector' in the light tube, said opening in the light tube being in line with the reflector and adapted to emit the light from the reflector, a casing around the reflector having an end cap at one end, and a speculum at the other end.

HENRY L. DE ZENG. n 

